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山东绿化苗木之香樟的播种育苗及病虫防治

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一、圃地选择

应选择土层深厚、疏松肥沃湿润、水源充足、排水良好、微酸性的砂壤土、壤土作圃地,积水地和碱性土不宜选用。整地、土壤消毒、施基肥等与其它阔叶树种基本相同。

山东绿化苗木Should choose the soil deep, fertile osteoporosis moist, abundant water, good drainage, slightly acidic sandy loam, loam as nursery, water and alkaline soil should be used. Tillage, soil disinfection, fertilizer and other broad-leaved tree species is basically the same.

二、播种方法

樟树播种冬播、春播均可,但以春播为好。播种前需用0.5%的高锰酸钾溶液浸泡2小时消毒杀菌,并用50°C温水间歇浸种2-3次催芽,以提高种子发芽率。

Camphor tree planting winter sowing, sowing can be, but with spring sowing for good. Potassium Permanganate solution soaking with 0.5% seeding 2 hours before sterilization, and with 50 degrees warm water 2-3 times C intermittent soaking pregermination, in order to improve seed germination rate.

采用条播,条距为20-25厘米,每米播种沟放种子30-40粒,每亩播种12公斤左右,播种后用火土灰或黄心土覆盖,厚度以不见种子为度,再盖上稻草保温保湿,以促进种子发芽。

By drilling, a distance of 20-25 cm, sowing seeds 30-40 per meter ditch grain, about 12 kg per mu planting, after planting with Tu Hui or yellow soil cover, thickness to seed for the degree, then cover with straw thermal insulation and moisture retention, to promote seed germination.

三、播种后的管理

When the seeds germination unearthed, uncovering the cover; seedling sends 3-5 leaves, can be fixed line between seedlings, every metre long channel reservation about 20 seedlings of Cinnamomum camphora seedlings, rapid growth, the general annual seedling height up to 50 cm, because the annual seedling root and fibrous root is little, the best in the process of transplanting nursery a year to the out of nursery planting; if Pei Da mu, also may according to need to transplant cultivation one or two years chupu.

在幼苗培育中要及时进行中耕、除草、培土、追肥、灌溉以及防治病虫害等培管工作。

In seedling cultivation should be timely cultivation, weeding, ridging, fertilizing, irrigation and pest control and other training work.

四、樟树苗的病虫害主要

1、樟梢卷叶蛾。一年发生数代,幼虫蛀食嫩梢,被害苗枯死。

1, Zhang tip moth. Year the generations, the larvae shoot dead, murdered seedlings.

Methods of prevention: available 40% dimethoate 200-300 times Pensha larvae, when lots of larvae pupate during combination of forest tending weeding hilling, kill insect pupa.

2、樟叶蜂。

2, sawfly.

The larvae damage the leaves, prevention methods: 90% crystal dipterex or 50% marathon emulsion each 2000 times Pensha, also can use 0.5 kilograms of Rhododendron molle or Tripterygium powder and water, 75-100 kg made pensha.

3、樟巢螟。幼虫辟集于新梢上取食叶芽,造成新梢枯死甚至全株死亡。

3, Orthaga Achatina butler. Larvae feeding on monarch sets new shoot buds, resulting in a new dieback even whole plant death.

Methods of prevention: when the larvae started activities has not yet formed a net nest, 90% times Pensha trichlorfon 4000-5000 crystal, such as larvae has net nest, artificial removal of burn.

4、白粉病。开始幼苗嫩叶背面主脉附近出现灰褐色斑点,以后蔓延至整个叶背,并出现一层白粉。

4, powdery mildew. Near the beginning of seedling leaves abaxially main veins appear grey brown spots, later spreading to the rest of the back of the blade, and the emergence of a layer of white powder.

Methods of prevention: pay attention to health appropriate nursery, seedling thinning, found in diseased plants should be removed immediately burned, symptoms significantly, with the LSSS Baume degree 0.3-0.5, spray once every 10 days, continuous spray 3-4 times.